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PISTONS

This category features carefully selected Komatsu aftermarket pistons from WQParts. Every component is chosen to deliver consistent fit, durability, and performance in tough working conditions. Whether you are rebuilding a specific system or refreshing high‑wear components, our Komatsu replacement parts help you reduce downtime without sacrificing quality or safety.

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42U-17-11101 Axial Piston Pump - Fits Komatsu Equipment
$7,827.65
Komatsu 42U-17-11101 Pump
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42U-17-11130 Axial Piston Pump - Fits Komatsu Equipment
$7,943.08
Komatsu 42U-17-11130 Pump
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42U-17-21100 Axial Piston Pump - Fits Komatsu Equipment
$6,771.26
Komatsu 42U-17-21100 Drive Pump
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42W-17-11101 Axial Piston Pump - Fits Komatsu Equipment
$8,272.62
Komatsu 42W-17-11101 Pump
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42W-17-11151 Axial Piston Pump - Fits Komatsu Equipment
$8,004.54
Komatsu 42W-17-11151 Pump
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45F-2Fh-2380 Ring, Piston - Fits Komatsu Equipment
$65.35
Komatsu 45F-2Fh-2380 Ring
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4948152 Piston - Fits Komatsu Equipment
$83.33
Komatsu 4948152 Piston
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4948153 Piston - Fits Komatsu Equipment
$83.33
Komatsu 4948153 Piston
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4948157 Pin, Piston - Fits Komatsu Equipment
$27.97
Komatsu 4948157 Pin
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4948171 Piston - Fits Komatsu Equipment
$127.41
Komatsu 4948171 Piston